Desk board moulding technology based on blow molding equipment

Abstract

The invention discloses a desk board moulding technology based on blow molding equipment, which is characterized in that raw materials are extruded from an oval discharge hatch and then introduced in a die, when the lowest part of the raw materials are extended out of the bottom of blowing dies , a bottom sealing clamping plate is started, a raw material belt with an annular shape and capable of connecting from up to down are performed with bottom sealing treatment, then a blow molding die locking machine is turned on, then the blowing dies are merged, the raw material belt is performed with extrusion moulding, a top sealing clamping plate is started when the blowing dies are merged or after merging of the blowing dies, the moulded raw material belt connected to upper part of the semi-finished product is clamped, the blowing dies, the bottom sealing clamping plate and the top sealing clamping plate are separated in order, the semi-finished product is taken down. The method has the advantage that raw material wastage is little, automatic seal equipment can be used for substituting artificial sealing, work efficiency is increased, and die adhering problem can be solved.

Description

technical field [0001] The invention relates to a table top molding process based on blow molding equipment. Background technique [0002] Nowadays, many portable household items are made of plastic products, such as folding dining tables, chairs, etc., and the main tabletops of such dining tables are relatively large, so injection molding requires high equipment requirements and requires large-scale equipment. Therefore, the semi-finished products of this type of large panels are basically extruded after blow molding, that is, the raw materials are extruded in a continuous strip shape, and then extruded by the mold after extrusion. Now there are The main problems are: 1. Since the panel of this type of semi-finished product is relatively large and the shape is plate-shaped, while most of the traditional blow molding ports are circular, the amount of raw materials when they are extruded from a circular shape to a plate shape The control is not good, and raw materials are of...

AI Technical Summary

Problems solved by technology

[0002] Nowadays, many portable household items are made of plastic products, such as folding dining tables, chairs, etc., and the main tabletops of such dining tables are relatively large, so injection molding requires high equipment requirements and requires large-scale equipment. Therefore, the semi-finished products of this type of large panels are basically extruded after blow molding, that is, the raw materials are extruded in a continuous strip shape, and then extruded by the mold after extrusion. Now there are The main problems are: 1. Since the panel of this type of semi-finished product is relatively large and the shape is plate-shaped, while most of the traditional blow molding ports are circular, the amount of raw materials when they are extruded from a circular shape to a plate shape The control is not good, and raw materials are often wasted; 2. Since the raw material is extruded downward in the form of a ring-shaped strip, the thickness of the strip-shaped raw material is relatively thin, and it is easy to flutter. The raw material band is easy to stick when fluttering. Operators manually seal the ring bottom to make it into a pocket shape, let the air blown out of the blow molding mouth fill the inner cavity of the sealed raw material belt, and then squeeze the inner cavity after it bulges. The defect is that the efficiency of manual sealing is too slow , and the sealing quality is not good; 3, this kind of product is easy to stick to the mold after extrusion, that is, the product is easy to stick to the surface of the core after the mold is separated, and it is troublesome for the operator to take it

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